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bay [bay 词源字典]: bay: There are no fewer than six distinct words bay in English. The ‘sea inlet’ [14] comes via Old French baie from Old Spanish bahia. Bay as in bay leaf [14] comes from a different Old French word baie, whose source was Latin bāca ‘berry’. The ‘reddish-brown colour of a horse’ [14] comes via Old French bai from Latin badius, which is related to Old Irish buide ‘yellow’.

The ‘recessed area or compartment’ [14] comes from yet another Old French baie, a derivative of the verb bayer ‘gape, yawn’, from medieval Latin batāre (English acquired abash and abeyance from the same source, and it may also be represented in the first syllable of beagle). Bay ‘bark’ [14] comes from Old French abaiier, in which the element -bai- probably originated as an imitation of a dog howling.

And it is the source of bay as in at bay [13] (from Old French abai), the underlying idea of which is that of a hunted animal finally turning and facing its barking pursuers.
=> abash, abeyance, beagle[bay etymology, bay origin, 英语词源]
bark (v.): in reference to a dog sound, Old English beorcan "to bark," from Proto-Germanic *berkan (cognates: Old Norse berkja "to bark"), of echoic origin. Related: Barked; barking. To bark up the wrong tree is U.S. colloquial, first attested 1832, from notion of hounds following the wrong scent.
bow-wow: imitative of a dog's barking, first recorded 1570s.
disembark (v.): 1580s, from Middle French desembarquer, from des- (see dis-) + embarquer (see embark). Related: Disembarkation; disembarked; disembarking.
embark (v.): 1540s (transitive); 1570s (intransitive), from Middle French embarquer, from assimilated form of en- "in" (see en- (1)) + barque "small ship" (see bark (n.)). Related: Embarked; embarking.